Figure 5
Top: Possible scheme for LMT on 87Sr based on sequential polychromatic π-pulses with spontaneous emission reduction. Bottom: Analogous scheme on 87Sr when operating with monochromatic π-pulses. Due to the benefits of polychromatic pulses, the polychromatic scheme enables a factor of 13 improvement on the momentum separation of the interferometer for the same experimental parameters. The numbers presented here (\(850\,\hbar k\) and \(64\,\hbar k\)) correspond to the LMT after which the interferometer visibility drops to 2%, which is obtained from a full calculation of the LMT visibility on both schemes assuming commonly used experimental parameters [see the Appendix, Sect. A.2]